﻿using NewsReaderApp.Helpers;
using NewsReaderApp.ViewModels;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using Windows.Foundation;
using Windows.Foundation.Collections;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Controls.Primitives;
using Windows.UI.Xaml.Data;
using Windows.UI.Xaml.Input;
using Windows.UI.Xaml.Media;
using Windows.UI.Xaml.Navigation;

// The Blank Page item template is documented at http://go.microsoft.com/fwlink/?LinkId=234238

namespace NewsReaderApp.Views
{
    /// <summary>
    /// An empty page that can be used on its own or navigated to within a Frame.
    /// </summary>
    public sealed partial class Portrait : NewsReaderPage
    {
        private string _lastText;
        public Portrait()
        {
            this.InitializeComponent();
            ft.LayoutUpdated += HandleTextChanged;
        }

        private void HandleTextChanged(object sender, object args)
        {
            if (string.Compare(_lastText, ft.Text) == 0)
                return;

            _lastText = ft.Text;
            var content = HtmlToXamlConverter.GetTextElementFromHTML(ft.Text);
            contentView.Content = content;
            contentView.FlowDirection = content.FlowDirection;
        }

        /// <summary>
        /// Invoked when this page is about to be displayed in a Frame.
        /// </summary>
        /// <param name="e">Event data that describes how this page was reached.  The Parameter
        /// property is typically used to configure the page.</param>
        protected override void OnNavigatedTo(NavigationEventArgs e)
        {
            base.OnNavigatedTo(e);

            var vm = (FeedViewModel)DataContext;
            if (vm == null)
            {
                vm = new FeedViewModel();
                ViewModel = vm;
            }
        }

        private void HandleReloadClick(object sender, RoutedEventArgs e)
        {
            var vm = ViewModel;
            if (vm != null)
            {
                vm.ReloadFromInternet();
            }
        }
    }
}